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Code Issues Releases Wiki Activity

remove possible mutex deadlock

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This commit is contained in:
Ralph Metzler 2017-05-16 21:24:48 +02:00
parent 3063b8e88b
commit 12b792ef3f
1 changed files with 4 additions and 2 deletions
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6
frontends/cxd2843.c
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@ -270,9 +270,10 @@ static int writebitsx(struct cxd_state *cxd, u8 Bank, u8 Address,
mutex_lock(&cxd->mutex); mutex_lock(&cxd->mutex);
status = readregsx_unlocked(cxd, Bank, Address, &tmp, 1); status = readregsx_unlocked(cxd, Bank, Address, &tmp, 1);
if (status < 0) if (status < 0)
return status; goto out;
tmp = (tmp & ~Mask) | Value; tmp = (tmp & ~Mask) | Value;
status = writeregsx_unlocked(cxd, Bank, Address, &tmp, 1); status = writeregsx_unlocked(cxd, Bank, Address, &tmp, 1);
out:
mutex_unlock(&cxd->mutex); mutex_unlock(&cxd->mutex);
return status; return status;
} }
@ -286,9 +287,10 @@ static int writebitst(struct cxd_state *cxd, u8 Bank, u8 Address,
mutex_lock(&cxd->mutex); mutex_lock(&cxd->mutex);
status = readregst_unlocked(cxd, Bank, Address, &Tmp, 1); status = readregst_unlocked(cxd, Bank, Address, &Tmp, 1);
if (status < 0) if (status < 0)
return status; goto out;
Tmp = (Tmp & ~Mask) | Value; Tmp = (Tmp & ~Mask) | Value;
status = writeregst_unlocked(cxd, Bank, Address, &Tmp, 1); status = writeregst_unlocked(cxd, Bank, Address, &Tmp, 1);
out:
mutex_unlock(&cxd->mutex); mutex_unlock(&cxd->mutex);
return status; return status;
} }